/* bzflag
 * Copyright (c) 1993-2020 Tim Riker
 *
 * This package is free software;  you can redistribute it and/or
 * modify it under the terms of the license found in the file
 * named COPYING that should have accompanied this file.
 *
 * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

// interface header
#include "RejoinList.h"

// common headers
#include "TimeKeeper.h"
#include "PlayerInfo.h"
#include "StateDatabase.h"  // for StateDatabase::BZDB_REJOINTIME

// bzfs specific headers
#include "CmdLineOptions.h" // for MaxPlayers & ReplayObservers
#include "RecordReplay.h"
#include "GameKeeper.h"

// it's loathsome to expose private structure in a header
typedef struct RejoinNode
{
    char callsign[CallSignLen];
    TimeKeeper joinTime;
} RejoinNode;


RejoinList::RejoinList ()
{
    queue.clear(); // call me paranoid
}

RejoinList::~RejoinList ()
{
    std::list<struct RejoinNode*>::iterator it;
    for (it = queue.begin(); it != queue.end(); ++it)
    {
        RejoinNode *rn = *it;
        delete rn;
    }
    queue.clear();
}

bool RejoinList::add (int playerIndex)
{
    GameKeeper::Player *playerData
        = GameKeeper::Player::getPlayerByIndex(playerIndex);
    if (playerData == NULL)
        return false;
    RejoinNode* rn = new RejoinNode;
    strncpy (rn->callsign, playerData->player.getCallSign(), CallSignLen - 1);
    rn->callsign[CallSignLen - 1] = '\0';
    rn->joinTime = TimeKeeper::getCurrent();
    queue.push_back (rn);
    return true;
}

float RejoinList::waitTime (int playerIndex)
{
    GameKeeper::Player *playerData
        = GameKeeper::Player::getPlayerByIndex(playerIndex);
    if (playerData == NULL)
        return 0.0f;

    std::list<struct RejoinNode*>::iterator it;
    TimeKeeper thenTime = TimeKeeper::getCurrent();
    thenTime += -BZDB.eval(StateDatabase::BZDB_REJOINTIME);

    // remove old entries
    it = queue.begin();
    while (it != queue.end())
    {
        RejoinNode *rn = *it;
        if (rn->joinTime <= thenTime)
        {
            delete rn;
            it = queue.erase(it);
            continue;
        }
        ++it;
    }

    const char *callsign = playerData->player.getCallSign();
    float value = 0.0f;
    it = queue.begin();
    while (it != queue.end())
    {
        RejoinNode *rn = *it;
        if (strcasecmp (rn->callsign, callsign) == 0)
            value = float(rn->joinTime - thenTime);
        ++it;
    }

    return value;
}

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